Trunks- Vejiita's and Bulma's son. There are essentially two different Trunks, one coming from a grim and chaotic future and one that was born in to a comfortable home in a comparatively more peaceful time. He first appears (age 17), when Cyborg Freeza and Great King Cold appear and kills both. He comes to warn Goku and friends about the coming of Cell and the androids in 3 years and save Goku from dying, who because of the use of teleport has aquired a heart disease. He informs Goku of where the Androids will come and, fortunately for Goku, gives him medicine from the future that will remedy the presently incurable disease.
The "future" Trunks, who because of his tough life is a lot stronger (in his time he lives in constant fighting so this gives him a lot more training, making him one of the strongest of the series) and also makes him more polite;
In his future all of the earth population (including the Z warriors) had been killed by the androids (except for Goku who had died of heart disease provoked by his teleporting tecnique). Hence, Trunks travels 20 years back in time to give medicine to Goku and warns the Z warriors about the coming of the androids (he comes back from the future at the same time that Cyborg Freeza and great King Cold appear, killing them both). Trunks knew that by this time, Goku would have returned to Earth. Afterwards, Trunks goes back to his own time, but returns again three years later to help the Z fighters battle the artificial humans. During his stay in the present, he becomes extremely strong. Stronger than any of the Z warriors, (excluding Gohan and Goku). After Cell is killed by Gohan, Trunks returns to the future and kills the cyborgs #17, #18 and Cell (in his future #17 and #18 seemed to be stronger), that terrorized his future.
The "present" Trunks is chibi Trunks, who is best friends with Goten. This Trunks, age 8, takes things for granted, having lived comfortably as part of the Capsule Corp. empire and knowing no hardships that future Trunks experienced.
Definitely more rambunctious than future Trunks, chibi Trunks is full of wild antics, such as knocking out a fighter, taking his costume and, along with Goten, pretending to be him in order to participate in the adult division of the TenkaichiBudoukai. Trunks, just like his best friend, mastered Supersaiyajin naturally. Trunks can fuse with Goten to become Gotenks.
